1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Berkeley Software Design Inc's name may not be used to endorse or 15 * promote products derived from this software without specific prior 16 * written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _SYS__LOCK_H_ 32 #define _SYS__LOCK_H_ 33 34 struct lock_object { 35 const char *lo_name; /* Individual lock name. */ 36 u_int lo_flags; 37 u_int lo_data; /* General class specific data. */ 38 struct witness *lo_witness; /* Data for witness. */ 39 }; 40 41 #ifdef _KERNEL 42 /* 43 * If any of WITNESS, INVARIANTS, or KTR_LOCK KTR tracing has been enabled, 44 * then turn on LOCK_DEBUG. When this option is on, extra debugging 45 * facilities such as tracking the file and line number of lock operations 46 * are enabled. Also, mutex locking operations are not inlined to avoid 47 * bloat from all the extra debugging code. We also have to turn on all the 48 * calling conventions for this debugging code in modules so that modules can 49 * work with both debug and non-debug kernels. 50 */ 51 #if (defined(KLD_MODULE) && !defined(KLD_TIED)) || defined(WITNESS) || defined(INVARIANTS) || \ 52 defined(LOCK_PROFILING) || defined(KTR) 53 #define LOCK_DEBUG 1 54 #else 55 #define LOCK_DEBUG 0 56 #endif 57 58 /* 59 * In the LOCK_DEBUG case, use the filename and line numbers for debugging 60 * operations. Otherwise, use default values to avoid the unneeded bloat. 61 */ 62 #if LOCK_DEBUG > 0 63 #define LOCK_FILE_LINE_ARG_DEF , const char *file, int line 64 #define LOCK_FILE_LINE_ARG , file, line 65 #define LOCK_FILE __FILE__ 66 #define LOCK_LINE __LINE__ 67 #else 68 #define LOCK_FILE_LINE_ARG_DEF 69 #define LOCK_FILE_LINE_ARG 70 #define LOCK_FILE NULL 71 #define LOCK_LINE 0 72 #endif 73 #endif /* _KERNEL */ 74 75 #endif /* !_SYS__LOCK_H_ */ 76